282 



INDEX 



Inbreeding, experiments with ani- 

 mals and plants, 100 



index, 81 



intensity of, 85 



mathematical considerations of, 

 80 



problem, phases of, 81 



reduction in vigor resulting from, 

 96 



and outbreeding in plant and 



animal improvement, 210 

 Infant consultations, 227 

 Infusoria, 78 



Inheritance, Mendelian, 72 

 Insanity, 231, 241 

 Insects in Oligocene amber, 197 

 Ipomea, 115, 117 

 Ireland, 251 ff. 

 Irish, 260 

 Isopods, 24 



Japan, 247 



Japanese, 254/\ 



Jennings, 78, 92, 95, 97, 202/. 



Jew, 26 If. 



English, 262 



German, 261 



Spanish, 261 

 Johannsen, 78, 166 

 Jukes, 237/f., 260, 262 

 Jutes, 259 



Keeble, 170, 172 



Kempton, 153 



Kerner, 34 



King, 101/f., 105, 107, 160, 188 



King Melia Rioter 14th, 85ff . 



Knight, 114, 141/f. 



Knight-Darwin law, 33 



Knuth, 34 



Kolreuter, 141/., 144, 154 



Lang, 13 

 Lavatera, 144 

 Learning strains, 124 

 Lecoq, 141 



Lee, 235 



Leguminosos, 1 14 

 Lethal factors, 179 

 Linaria, 144 

 Lincoln, 235/. 

 Lindley, 143 

 Liverworts, 29, 45 

 Lobelia, 144 

 Loeb, 200 

 Lychnis, 144 

 Lycium, 144 

 Luff a, 144 



MacLennan, 13 



MacNamara, 257 



Maize, connate seeds of, 133 



distribution of rows of grain 

 of, 129 



fertility of, 188/f. 



growth curves of, 152 



inbred strains and hybrids of, 

 150 (Fig. 31) 



inbred strains of, 130 (Fig. 29) 



number of nodes of, 150 



segregation of ear row number 

 of, 131, 132 



variety crosses of, 153 

 Malthus, 247 

 'Malva, 144, 155 

 Mammals, crossing of, 159/f. 

 Man, inbreeding and outbreeding 

 in, 226 



interfertility of, 246 

 Marchals, 46 



Marriage of near relatives, 100 

 Matings, brother and sister, 97 



parent and offspring, 97 

 Mauz, 141 



Mecca of politically oppressed, 264 

 Mechanism of heredity, 50 



of reproduction, 36 

 Mendel, 50, 118, 144/., 165 

 Mendelian segregation, 88 

 Mendelism, Slff. 



Mendel's laws of inheritance, 55 

 Merz, 233 



